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From: dewolfe@ug.cs.dal.ca (Colin DeWolf)
Newsgroups: comp.sys.amiga
Subject: Re: Question on System Request
Message-ID: <1990Nov21.012537.6773@cs.dal.ca>
Date: 21 Nov 90 01:25:37 GMT
References: <1990Nov19.151458.7631@diku.dk> <7997@ucdavis.ucdavis.edu>
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In article <7997@ucdavis.ucdavis.edu> zerkle@iris.ucdavis.edu (Dan Zerkle) writes:
>In article <1990Nov19.151458.7631@diku.dk> aggaton@diku.dk (Klavs Torben Pedersen) writes:
>>     I've got a C programming question, that have been bothering me for some 
>>time now... I open a screen and a standard window on it, next I attach a console
>>to the window, all this goes fine, until I begin to access the disks...Suddenly
>>the screen is changed, and the system request window is shown "Please insert"
>>bla. bla. bla. How the f*&^$ can I make this Bl*&^% requester to pop up on MY
>>window?????
>
>According to the 1.3 Rom Kernel Manual, Libraries and Devices:
>
>System requester are invoked by the operating system; your program has
>no control over these.  For example, someone using a text editor might
>try to save a file to disk when there is no disk in the drive.  The
>system requester comes up and makes sure the user understands the
>situation and requests a response from the user.
>
>In other words, you're screwed.  However, I'm sure there's some hack
>floating around out there to let you do this, even if it is probably
>ugly and nonstandard and will break under the next OS release....
>
Not according to my 1.3 RKM, L's and D's

On page 138, (reprinted without permission of course):
	System requests appear on the workbench screen by default. They can be
	made to appear on custom screens by changing the WindowPtr field of
	Process structure to point to a window on a custom screen  The original
	value of WindowPtr should be cached and restored before the window is
	closed.

There you have it.  I wonder if I can get in trouble reciting from the RKM's?

Colin DeWolfe
dewolfe@ug.cs.dal.ca
dewolfe@iris1.ucis.dal.ca

>           Dan Zerkle  zerkle@iris.eecs.ucdavis.edu  (916) 754-0240
>           Amiga...  Because life is too short for boring computers.